JP2009513099A - Electric motor with fixed adapter - Google Patents

Abstract

  The present invention is an electric motor provided with a fixed adapter (2), the fixed adapter (2) having a central planar region, which is flat two damping elements (8, 8 '). ), A plurality of openings are provided in the central region of the fixing adapter (2) and the damping element (8, 8 '), and the fixing means (7) is inserted into the opening. The fixing means presses the component unit comprising the damping element (8, 8 ') and the fixing adapter (2) against the planar region (5) of the support component (4) secured to the electric motor. By doing so, the damping element (8, 8 ') is at least partially elastically compressed.

Description

  The present invention relates to an electric motor provided with a fixed adapter, and more particularly to a small electric motor.

  Various electric motors used include an attachment device for attaching the motor to a constituent part as a support, and a receiving portion for the electric motor is provided in the attachment device. It is not adapted to the components as

  Rear wiper motors are often attached to the rear door or tailgate. The attachment is performed by arranging the motor inside the vehicle. In this case, the mounting must ensure a sufficiently accurate positioning of the rear wiper motor so as to enable an effective operation of the wiper device. The positioning accuracy must be independent of the load or torque during operation of the wiper device. In this case, the mounting portion must be formed stably, i.e., robust, in order to mount the rear wiper so as not to be relatively rotatable and to withstand an impact. In addition, it is desirable to prevent inconvenient noise during the operation of the wiper device. For this reason, an effective means for vibration isolation is required for normal vehicle body vibration. In other words, there is a need for a means that satisfies the partially conflicting requirements of sturdy mounting and effective noise isolation.

  In a generally known means, a mounting opening is provided in a casing portion of the motor for rear window glass wiper or another constituent unit, and a damping member (buffer member) is mounted in the mounting opening. The casing is attached to the vehicle body using a general attachment member (fixing member) such as a screw or a bolt. Such means require an exact adaptation of the casing to each body part to which the motor is to be attached. This means that when the same rear window glass wiper motor is installed in different types of vehicles, the casing is structurally significantly changed for each vehicle, that is, for each user, corresponding to a very different installation location (assembly space). It means to (deform). In addition, the sound insulation means or the noise insulation device must be newly optimized or adapted for each adapter.

  According to the method described in DE 10242298A1, the construction costs for adapting the wiper motor to different types of vehicles include a complete wiper drive and an adapter that is fixed to the vehicle body in the final assembly stage. It is reduced by combining the parts. In this case, the coupling between the adapter part and the wiper drive unit or the coupling between the adapter part and the vehicle body is performed by using a plurality of well-known mounting members, and the mounting member is provided with a corresponding opening through a blocking sleeve. It is inserted and fixed in the part.

  Furthermore, with the measures described in DE 10301900A1, the construction costs for adapting the wiper motor to different types of vehicles are reduced by providing suitable receptacles at the attachment points; The receiving portion is fixed to the vehicle body, and is coupled to the attachment member of the wiper driving portion at the time of final assembly. In this case, an individually adapted noise cutoff device is required.

  Furthermore, in the means described in EP 1 375 270 A2, the assembly costs are reduced by assembling the wiper drive with the fastening plate, which is connected to the drive casing. It is arranged for force transmission between the body thin plate (body thin plate). In this case, the assembly is performed by the sole opening of the vehicle body thin plate. In order to receive high torque, a fitting type coupling member is provided, and the coupling member is fitted and coupled in the opening of the thin plate of the vehicle body in the vicinity of the rotating shaft of the wiper device.

  The aforementioned technical problems are generally applicable to devices that are intended to couple small electric motors to flat and differently shaped components and to receive torque from the motor through the couplings.

  An object of the present invention is to provide an attachment means that enables quick and reliable assembly or assembly of an electric motor, in particular, an electric motor as a wiper drive unit. I want to be done in a state where the vibration is cut off.

  In order to solve the above problem, in an electric motor having a fixed adapter (mounting adapter), particularly a small electric motor, according to the present invention, the fixed adapter has a central flat area (flat area). The region is sandwiched between two flat damping elements, that is, the fixed adapter has damping elements (or damping members) attached to both sides of the central flat region, and the center of the fixed adapter A plurality of openings (or through holes) are provided in the region and the damping element, and a fixing means (or fixing member) is inserted into the opening. The fixing means includes the damping element and the damping element. Front by pressing the component unit (device) consisting of a fixed adapter against the planar area (or end face) of the support component fixed to the electric motor It is adapted to at least partially elastically compressible damping element. Dependent claims 2 to 13 describe advantageous embodiments of the invention.

  The invention is based on coupling the electric motor with a replaceable fixed adapter, in which case the coupling area between the electric motor and the fixed adapter is the final assembly of the complete drive unit (component unit) It is formed without depending on the location. This enables a unified standard configuration of the electric motor, since the adaptation to the assembly location is made only by deformation or change (variation) of the fixed adapter. Such a deformation of the fixed adapter takes place outside the coupling area between the electric motor and the fixed adapter. The coupling between the electric motor and the fixed adapter is designed to block noise, and for this purpose, easy-to-assemble damping members made of rubber or similar or equivalent material are arranged on both sides of the fixed adapter. The damping member prevents metal contact between the fixed adapter and the electric motor.

  Various advantages are obtained when the present invention is used in particular for a wiper device of an automobile, for example, for mounting a motor for a rear wiper. The replacement of the fixed adapter is attenuated by pressing a component unit (group or device) consisting of a flat damping element and a fixed adapter against the planar area or end face of the support component fixed to the electric motor. It is easily possible if the fixing means (fixing element) adapted to at least partially elastically compress the element are formed by screws or bolts that can be screwed back.

  The supporting component used as a counterpart for the fixing means and fixed to the electric motor can be molded without problems by imparting a suitable shape to a generally rigid motor casing.

  Since the wiper motor in the rear region is often mounted inside the vehicle, the shaft for driving the wiper needs to penetrate the vehicle body. In this case, the mounting principle according to the present invention is that the support component fixed to the electric motor is formed as a cylindrical casing part that annularly surrounds the drive shaft of the wiper device, and the casing part has a flat support surface. Provided, for example, by advantageously forming the end face of the casing part as a flat support surface. A screw hole is provided in the flat support surface of the end face of the casing portion, and a screw for fixing the fixing adapter is engaged in the screw hole, that is, screwed. In order to achieve a rugged connection between the electric motor and the fixed adapter, a clamping plate is provided, the clamping plate fixing a component unit consisting of a flat damping element and a fixed adapter to the electric motor. It pushes toward the support component.

  For further ease of assembly, according to an advantageous embodiment of the invention, the fixing adapter has a positioning member in the central region of the fixing adapter, the positioning member (positioning part or positioning means) being a damping element Is defined (defined). According to a further advantageous embodiment of the invention, the support component fixed to the electric motor has a positioning member (positioning means), which positioning element is on the side in contact with the support component Is defined.

  In order to facilitate the assembly of the wiper device with the drive shaft guided through the vehicle body, in an embodiment of the invention, the drive shaft of the wiper device passes through each one opening in the center of the fixed adapter and the damping element It is like that.

  The fixing adapter is provided with a fixing element (fixing element or fixing means) outside the central region used for coupling the adapter to the electric motor, and by means of the fixing element, the entire wiper driving part, that is, concretely, is provided. In this case, a fixed adapter, and thus a constituent unit, is connected to a constituent part as a support. The component as the support is, for example, a vehicle body. For the replacement of the wiper device or the wiper drive, the wiper drive is preferably fixed by means of a fixing element that can be decoupled. This is easily done, and in an advantageous embodiment for this purpose, the fixing adapter comprises a fixing element which can be decoupled outside the central region of the adapter, i.e. at the edge, by means of the fixing element. Based on the coupling or the detent coupling, the wiper driving part is attached to the surface part or the wall part of the opening provided with the component part as the support, that is, the fixing element serves as the support. It fits into the opening of the component part and is locked to a surface around the opening of the component part, for example, an outer surface, that is, detented.

  Advantageously in terms of manufacturing technology, the fixed adapter is a steel component (component) that is molded using a mold or deep drawn.

The present invention will be described in detail based on illustrated embodiments. In the drawing
FIG. 1 is an exploded perspective view of an apparatus according to the present invention having a motor for a rear wiper and a fixed adapter,
FIG. 2 is a longitudinal sectional view of a click connector as a fixing element for fixing (coupling) a fixing adapter to a vehicle body thin plate having a notch or an opening,
3 is a cross-sectional view of the click connector of FIG.

  The device (wiper driving device) according to the present invention shown in FIG. 1 includes a rear wiper motor and a fixed adapter disposed in a casing 1. As shown in the drawing, the drive shaft 3 is surrounded by a support component 4 which is secured to the casing 1 and thus to the electric motor. The support component 4 is formed as a cylindrical casing part that surrounds the drive shaft 3 of the wiper device in an annular manner, and the casing part has a flat support surface 5. A screw hole 6 is provided in the support surface 5, and a screw 7 for fixing the fixing adapter 2 to the casing 1 of the rear wiper motor is screwed into the screw hole. The fixed adapter 2 is formed as a deep-drawn steel component. In the illustrated embodiment, the fixed adapter is formed in the shape of a substantially flat surface and is formed from a plate material. It is also possible to form in a different shape by deep drawing, that is, it allows easy adaptation to different assembly locations. According to the invention, the fixing adapter 2 is formed with a central region adapted to the shape of the support component 4, here a flat plane, ie to the shape of the support component (flat plane). Disc-shaped (plate-shaped) elastic damping members 8, 8 ′ made of rubber are arranged on both sides of the central region of the fixed adapter 2. The component unit (device) comprising the damping members 8, 8 'and the fixed adapter 2 is pressed against the support surface 5 by screws 7 in the assembled state, in which case the damping members 8, 8' are at least partially It is elastically compressed. In order to ensure an effective clamping action of the screw 7 and to avoid damaging the outer damping member 8, the device according to the invention additionally includes a clamping plate 9, which is clamped on the screw. The clamping force is uniformly transmitted to a laminating apparatus (pile apparatus or laminating unit or laminated body) composed of the damping members 8, 8 'and the fixed adapter 2. Each of the damping members 8, 8 ', the fixed adapter 2, and the tightening plate 9 has a central opening (through hole), and guides the drive shaft 3 of the wiper device through the opening. This is necessary for the inner mounting of the wiper drive.

  A pin-shaped positioning member 10 is provided on the support surface 5, and the positioning member is used for accurate positioning of the damping member 8 so as to engage with the corresponding hole 11 of the damping member 8. It has become. Further, an elongated positioning member 12 protruding from the adapter surface is provided in the central region of the fixed adapter 2, and the positioning member engages with the corresponding long hole 13 of each damping member. With such a configuration, the precise positioning of the damping members 8, 8 'and the fixed adapter 2 with respect to the support surface 5 during assembly is achieved, and the accurately positioned damping members 8, 8' and the fixed adapter 2 are then It is fixed by a screw 7. The damping members 8 and 8 'provide sufficient noise blocking, and the damping members do not require adaptation to various attachment points. By reducing the number of damping members, assembly work is also reduced.

  Adaptation of the geometric shape to various attachment points can be performed only by changing the fixed adapter 2 (change in shape dimension). The change of the fixed adapter 2 takes place outside the coupling area between the electric motor, ie the support surface 5 and the fixed adapter 2. On the other hand, the central region of the fixed adapter 2 is always formed with the same structure.

  By the appropriate formation of the support component 4, the screw 7, the clamping plate 9 and the fixing adapter 2, a very stable or robust component unit (device) of the wiper drive can be achieved. Inconvenient relative motion between them is almost eliminated. The pre-assembled component unit is fixed to the vehicle body by a plurality of fixed components 14, and the fixed components (fixed elements or fixed portions) are arranged in the edge region of the fixed adapter 2. Has been. The sufficiently large dimensions of the fixed adapter ensure that the relatively weak fixed component 14 also receives the torque generated, since the fixed component is at a sufficient distance from the axis of rotation. It is because it is arranged. In the embodiment, a spring elastic locking portion is used as the fixed component 14, and the spring elastic locking portion is formed as a click connector (a spring hook or a spring pawl connector as a detent). In addition, it is fitted into a corresponding opening of the vehicle body to form a coupling portion to the surface of the vehicle body. The above-described configuration of the fixed adapter allows a very simple final assembly, which is simply done by pushing a pre-assembled component unit into the opening of the vehicle body. The fixed adapter is removed by releasing the locking (locking) of the fixed component, i.e. the connection formed by the spring-elastic locking part is reversible, i.e. the connection This is advantageous if the device needs to be replaced. By using a spring-elastic locking part as a stationary component, a further advantage is that the shearing force resulting from the impact is absorbed by the spring-elastic action of the locking part, so that the permanent wiper drive Misalignment does not occur.

  Adaptation of the fixing adapter 2 to differently shaped attachment points can be achieved by changing the length of the fixing component 14 appropriately, i.e. to a length that matches the dimensions of the attachment point, This is done by appropriately changing the distance between the central region or by appropriately forming the edge region of the fixed adapter 2. The means for appropriately forming (changing) the edge region of the fixed adapter in accordance with the size of the mounting portion is particularly advantageous when a deeply drawn metal part (metal component) is used as the fixed adapter.

  2 and 3 show a spring elastic locking portion formed as a fixing means for attaching a fixing adapter to the vehicle body thin plate 15 provided with an opening, that is, a connecting portion by a click connector. FIG. 2 is a longitudinal sectional view taken along a cutting plane AA ′ in FIG. 3. Each spring-elastic locking portion has a plurality of metal strips (metal strips, that is, spring hooks or spring claws) that are expanded and elastically displaceable.

  The vehicle body thin plate 15 includes an opening 16 in the region of the coupling portion. The fixed component 14 is fitted into the opening from the motor side. In this case, the metal strip 17 used for a desired locking at the end position is first displaced into the opening 16 while being elastically displaced by the edge of the opening 16, The metal strip is inserted into the opening 16 until the locking surface 18 passes through the opening 16. The locking surface 18 is positioned in front of the outer surface of the vehicle body thin plate 15 by the return based on the elastic action of the metal strip 17 at the terminal position of the fixed component 14, and as a result, a locking portion is formed by fitting. At the end position, the other metal strip 19 is in contact with the inner surface of the vehicle body thin plate 15 on the motor side. The metal strip 19 forms a terminal stopper in a state in which the fixed component is fitted and locked in the opening 16. Fixing (attachment) of the fixing adapter to the vehicle body thin plate without play is performed by elastically displacing the metal strip 19 when it reaches the end position, that is, by being pressed against the vehicle body thin plate with a predetermined stress. This is done by expanding. The return force (restoring force) acting in the locked state of the fixed component prevents the force to be received by the fixed adapter from causing loosening or vibration of the coupling portion (cracking noise) by providing the metal strip 19 with an appropriate shape. It has come to be specified in.

  The extension 20 projecting beyond the opening 16 allows for easy unlocking of the coupling part, i.e. the fixed component, when it is necessary to remove the wiper drive.

  With the above-described configuration according to the present invention, in order to fix the wiper device to various attachment points different from each other, in the case of using a unified joint on the motor side, the fixing adapter to the attachment location (assembly site) The labor for fitting and molding is significantly reduced. Reduction of noise generation in the vehicle passenger compartment and reduction of wiper angle error are further advantages of the present invention.

Exploded perspective view of the device according to the invention Vertical section of the click connector as a fixed element Cross-sectional view of the click connector of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Casing, 2 Fixed adapter, 4 Support component, 5 Support surface, 6 Screw hole, 7 Screw, 8, 8 'Damping member, 9 Tightening plate, 11 hole, 13 Long hole, 14 Fixed component, 15 Car body thin plate, 16 opening, 18 locking surface, 20 extension

Claims (13)

  An electric motor comprising a fixed adapter (2), said fixed adapter (2) having a central planar area, which is between two flat damping elements (8, 8 ') A plurality of openings are provided in the central region of the fixing adapter (2) and the damping element (8, 8 '), and the fixing means (7) is inserted into the opening. The fixing means comprises a planar unit (5) of a supporting component (4) fixed to an electric motor, the component unit comprising the damping element (8, 8 ') and the fixing adapter (2). An electric motor with a fixed adapter, characterized in that the damping element (8, 8 ') is at least partially elastically compressed by being pressed against.   The electric motor according to claim 1, wherein the constituent unit is a constituent part for fixing the wiper device to the automobile.   The electric motor according to claim 2, wherein the component unit is provided to fix the wiper device to a vehicle body portion in a rear region of the automobile.   By pressing the component unit comprising the damping element (8, 8 ') and the fixed adapter (2) against the planar area (5) of the support component (4) secured to the electric motor 4. The fixing means (7) adapted to at least partially elastically compress the damping element (8, 8 ') is formed by a screw which can be screwed back. The component unit according to item 1.   The support component (4) fixed to the electric motor is formed as a cylindrical casing part that annularly surrounds the drive shaft (3) of the wiper device, the casing part being a flat support surface (5). 5. The component unit according to claim 2, wherein the flat support surface is provided with a screw hole.   A clamping plate (9), which comprises a component unit comprising the damping element (8, 8 ') and the fixed adapter (2), a support component (4) secured to an electric motor The component unit according to any one of claims 1 to 5, wherein the component unit is pressed toward the head.   The fixed adapter (2) has a positioning member (12) in the central region of the fixed adapter, the positioning member being adapted to define the position of the damping element (8, 8 '). The constituent unit according to any one of claims 1 to 6.   The support component (4) secured to the electric motor has a positioning member (10), which positioning member (8 ') on the side in contact with the support component (4). The component unit according to any one of claims 1 to 7, wherein the component unit is defined in a position.   The structure according to any one of claims 2 to 8, wherein the drive shaft (3) of the wiper device passes through predetermined openings of the fixed adapter (2) and the damping element (8, 8 '). unit.   The fixing adapter (2) is provided with a fixing element (14) outside the central region, and the fixing element (2) and by extension the constituent unit is coupled to the constituent part as a support by the fixing element. The component unit according to claim 1.   The fixing adapter (2) is provided with a fixing element (14) that can be released from the outside of the central region, and the fixing adapter (2) and, consequently, the constituent unit can be used as a component as a support by the fixing element. 11. A component unit according to any one of the preceding claims, wherein the component unit is detachably coupled. The fixing adapter (2) comprises a fixing element (14) outside the central region, the fixing element comprising:
The constituent unit according to any one of claims 1 to 11, wherein the constituent unit is fitted into an opening of a constituent part as a support and is locked to a surface (15) of the constituent part.   The component unit according to any one of claims 1 to 12, wherein the fixed adapter (2) is a deep-drawn steel component.

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